Distance/Weight/Mass

Question 1

What does the brightness of a star from us (its apparent magnitude) depend on?

Answer 1

on its actual brightness (its absolute magnitude) and its distance from Earth

Question 2

What might a dim star close to us appear like?

Answer 2

appear brighter than a really bright star a long way away

Question 3

What must astronomers know to calculate the absolute magnitude of a star?

Answer 3

how far away it is

Question 4

What does the colour red and white/blue mean?

Answer 4

The colour of a star depends on its surface temperature: red stars are cool, and white and blue stars are hot.

Question 5

Mass?

Answer 5

measure of how much stuff is in an object.

Question 6

Weight?

Answer 6

Weight is a force acting on that stuff. Weight is the result of gravity

Question 7

Explain example of Earth’s gravity:

Answer 7

The Earth’s gravity attracts objects towards the centre of the Earth and you feel forces like this as weight.